Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Complete the table series riddle by finding the number that can replace "??".

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

I’m tall when I’m young, and I’m short when I’m old. What am I?

In which direction should the missing arrow point?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What is next number in the pattern below:

131 517 192 123 ?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

How can you drop a raw egg from a height onto a concrete floor without cracking it?